I have had my laptop for about 4 years now and I have just replaced the battery because it wouldn't hold any charge and had to always be plugged in. The new battery that I have, doesn't fully charge.

When I first out it in it would charge to 65% and then the orange battery charging light would go out and the laptop would say "plugged in but not charging". Over the last few weeks this has now started to happen at 55%.